Carol_Danvers2020 [OP] 3 points 2y ago
There’s actually a pretty good reason! (You’re asking for the significance to the story, right? I think that’s what you’re asking.)
So the main villain has the power to mess with the occipital lobe in his enemies’ brains, the part that deals with vision, and makes it so that they temporarily can’t see. Since the main character Garan is blind, however, he is unaffected; his species (they’re dragons) is able to sense magical auras, and they also have good hearing, so with those two things combined, he’s still able to fight. (Important note: he cannot see the magical auras, he can just sense them.) Garan is a lot better at fighting the villain than most people because he is used to be being blind, so Garan is the one who eventually defeats him.
Hopefully that makes sense!
If you were asking how he goes blind, he loses his sight to an infection. His face was clawed while he was protecting his wife, and then his wounds and eyes got infected, which caused him to lose his vision entirely.